Strange alarm at start up

[JVAdams]

Hi all,
Brand new to the forum and new (used) 2015 Yukon owner (about 2 weeks). I owned a 2009 hybrid Tahoe that died on me (transmission) but am still trying to figure out all the bells and whistles on the gmc. So this leads me to my question. What in the heck is this alarm sound? I swear it would only do it once when I first got the rig. Now it repeats about 5-6 times. Seems like it’s only at cold start up. Anyone have a clue? Thanks in advance and looking forward to being a part of the community here. jason

 

[BlackYukon]

Hi all,
Brand new to the forum and new (used) 2015 Yukon owner (about 2 weeks). I owned a 2009 hybrid Tahoe that died on me (transmission) but am still trying to figure out all the bells and whistles on the gmc. So this leads me to my question. What in the heck is this alarm sound? I swear it would only do it once when I first got the rig. Now it repeats about 5-6 times. Seems like it’s only at cold start up. Anyone have a clue? Thanks in advance and looking forward to being a part of the community here. jason

Sounds to me like there is a aftermarket security system installed. If you look near the Battery Terminal or OBD2 Port and see any wires that don't belong, just trace them until you find the culprit.

 

[JVAdams]

Sounds to me like there is a aftermarket security system installed. If you look near the Battery Terminal or OBD2 Port and see any wires that don't belong, just trace them until you find the culprit.

Cool I’ll give that a shot! Thanks

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics, please.

 

[goldinator]

Not many people know of it, but it is a swat security system. Not exactly sure why they put it in there, but it is on some newest models too